Introduction

When electrons are accelerated back and forth, electromagnetic waves are produced. Different frequencies of vibration produce different wavelengths, and these are lined up on the EM Spectrum. We subdivide the spectrum into regions that correspond to frequencies with different useful properties.

Activity

Several class activities offered practice for the ordering of the EM Spectrum. The Quia activity linked in the icon below tests your understanding of the Spectrum.

Assessment

1 Quality Point

Exercise is attempted with some success.

2 Quality Points

Exercise is attempted, and mostly successful.

3 Quality Points

Exercise is fully successful, regardless of number of attempts.

4-5 Quality Points

A short report is prepared on a region of the EM Spectrum that is used to transmit information. Please discuss your choice with Mr. Cox before fully committing to this report. You should consider:

• what are the frequencies/wavelengths used in this form of technology;
• what substances absorb, reflect, and transmit this kind of wave;
• where are the transmitter and receiver involved in this technology.